DiGiYes 1 Pair High Speed HDMI Female to Female Coupler Adapter for Extending Your HDMI Devices DiGiYes HDMI female to female coupler could convert a HDMI male into HDMI female interface, and extend your HDMI devices by connecting 2pcs HDMI cables together. The gold-plated connectors that resist corrosion while offering optimum signal transfer. Support audio return channel, HDMI ethernet channel and 3D. Support resolutions up to 4K x 2K.